android - 在 EditText 中输入开始新行的键而不是提交文本 (Android)

Question

我正在创建一个简单的待办事项应用程序，通过 EditText View 添加新的待办事项。所以我试图让它提交新项目到列表当我按下回车键。但出于某种原因，它只是换行。我还注意到，当我通过 Eclipse 通过 AVD 使用回车键时，它工作正常，但问题仅在我通过 Nexus 运行它时出现4.

这是我的代码:

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.todo_main);

    //Create reference to the ListView in the main layout
    ListView myListView = (ListView)findViewById(R.id.myListView);

    //Create a reference to the EditText view in the main layout for adding new items
    final EditText editText = (EditText)findViewById(R.id.myEditText);

    //Create a an arraylist to hold all the todo items
    final ArrayList<String> todoList = new ArrayList<String>();

    //Create an ArrayAdaptor object to be able to bind ArrayLists to ListViews
    final ArrayAdapter<String> arrayAdaptor = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, todoList);
    myListView.setAdapter(arrayAdaptor);

    //Listens for certain keys to be pushed, particular the dpad center key or enter key
    editText.setOnKeyListener(new View.OnKeyListener() {    
        @Override
        public boolean onKey(View v, int keyCode, KeyEvent event) {
            if(event.getAction() == KeyEvent.ACTION_DOWN)
            {
                if((keyCode == KeyEvent.KEYCODE_ENTER || keyCode == KeyEvent.KEYCODE_DPAD_CENTER))
                {
                    //add item in the EditText to the todo list 
                    todoList.add(0, editText.getText().toString());
                    //Update the view by notifying the ArrayAdapter of the data changes
                    arrayAdaptor.notifyDataSetChanged();
                    editText.setText("");
                    return true;
                }
                return false;
            }
            return false;
        }
    });
}

和 XML:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".ToDoListActivity">

<EditText
    android:id="@+id/myEditText"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:hint="@string/addItemHint"
    android:imeOptions="actionDone"
/>

<ListView
    android:id="@+id/myListView"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"  
/>

请注意，我在堆栈溢出上发现了类似的问题，但似乎没有一个能解决我的问题。我试过了!

Answer 1

将 EditText 小部件上的 singleLine 属性设置为 true:

<EditText
    android:singleLine="true"
    android:id="@+id/myEditText"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:hint="@string/addItemHint"
    android:imeOptions="actionDone"
/>